What could be done to minimize road-rage that’s spreading enormously these days ?

Just take today’s newspaper or any other day. It’s not surprising to find some or the other news about someone killing a person or people fighting in groups just for as petty matters as giving side on road. Violence on road is increasing day-by-day..especially in India. I guess this is because people suppress there everyday frustration about professional or personal lives inside themselves and then spill it out on those strangers. I think appropriate steps should be taken to minimize this. But the question is that what could be those steps ?